Trustees



G. HUNTER.

STEM WINDING AND HAND SETTING ATTAGHMENT FOR WATUHES.

(No Model.)

Patented Feb. 24, 1885.

.L In U511 L U 1-: um M Mi;

Mi1a5555= J Nv PETERS. Pholwblhcgmpher. Washmg'nn, D. c

UNITED STATES PATENT OFFIc GEORGE HUNTER, OF ELGIN, ILLINOIS, ASSIGNOB,BY MESNE ASSIGNMENTS, TO ROYAL E. ROBBINS, OF BOSTON, MASS, AND TIIOS.M. AVERY, OF

CHICAGO, ILLINOIS, TRUSTEES.

STEM-WINDING AND HAND-SETTING ATTACHMENT FOR WATCHES.

SPECIFICATION forming part of Letters Patent No. 312,856, dated February24-, 1885.

Application filrd August 2:, L884.

lb aZZ whom it may concern:

Be it known that I, GEORGE HUNTER, of Elgin, in the county ofKane, andin the State of Illinois, have invented certain new and usefulImprovements in Stem-Winding and Hands Setting Attachments for IVatches;and I do hereby declare that the iollo'wing is a full, clear, and exactdescription thereof, reference being had to the accompanying drawings,in which Figure 1 is an enlarged perspective view of my push-pin and itsconnections separated from each other. Fig. 2 is a like view of the samecombined. Fig. 3 is a longitudinal section of the stem or pendentportion of a watchcase containing my invention, the push-pin being inposition for operating the winding mechanism; and Fig. 4 is a like Viewof the same with said push-pin in position for actuating thehands-setting mechanism.

Letters of like name and kind refer to like parts in each of thefigures.

My invention is an improvement upon a like invention for which LettersPatent No. 192,425 were issued upon the 26th day ofJune, 1877; and itconsists, principally, as an improvement in stem-winding and handsettingwatches, in a push-pin which is adapted at its inner end to engage withthe winding and hands-setting train, and is provided with aretainingspring that is attached directly to, is adjustable lengthwiseof, and moves with, said push-pin, in combination with the chamberedstem or pendant of a watch-case, substantially as and for the purposehereinafter specified.

It consists, further, in combining with the chambered stem or pendantofa watch-case a ring of hard metal, which is secured within saidchamber and is adapted to engage with the retaining-spring of aremovable push-pin, substantially as and for the purpose hereinaftershown.

It consists, finally, in the combination of the push-pin, the adjustable retaining-spring, the chambered stem or pendant, and theengaging-ring, substantially as and for the purpose hereinafter setforth.

In the annexed drawings, A represents the (No model center-band, B thestem or pendant, O the bow, and D the case-spring, of a watch-case ofusual construction.

The stem or pendant B isprovided with the usual axial opening, 7), thatat its inner end has a slightly greater diameter than the push-pin orwindingstem arbor IQ, which is to be used therein, while the outerportion of said opening is considerablyincreased in diameter,and at orwithin its outer end contains a ring, Z), constructed from hard metal,that is secured in place by burnishing, or other suitable means, andforms at such point a rounded shoulder. The push-pin or windingarbor Ehas such diameter of its inner portion as to enable the same to beloosely contained within the corresponding part of the stein-opening 1),and such length that when said inner end is resting upon the spring Dits outer end will project the required distance from out of the stem B,and at such point receive a crown, F.

At a point near the longitudinal center of the push-pin IE is a threadedenlargement, 6, upon which is placed a U-shaped spring, G, that at itsinner end has a threaded opening, g, which passes over and engages withsaid enlargement e. The outer ends of the arms 9 of the spring G areslightly spread, so that their outer faces at such point will have agreater spread than the inner diameter of the ring I), and within suchfaces is provided a circumferential groove, 9 that corresponds intransverse size and shape to the inner face of said ring Z).

As thus constructed the spring G operates by engagement of its outerends, or of the groove ,\\ith the ring I) to hold thepush-pin E inposition within the stem or pendant B, while permitting of its readywithdrawal therefrom when a suificient force is exerted 0 in an outwarddirection.

In adjusting the push-pin E to the watchcase, the spring G is movedlongitudinally until its outer ends will bear lightly against the lowerside of the ring Z), when the inner end of said push-pin has a bearingupon the spring D, by which means all rattle from end motion of saidpuslrpin is avoided.

The push-pin E is used for the movement of the spring G precisely as inordinary cases,

and by the engagement of its inner end with Winding and hands-settingmechanism may be used in any usual manner for winding the mainsyning andsetting the hands, while by withdrawing said push-pin until thespringgrooves engage with the ring I) said push pin, while held in suchposition, will be free to revolve.

The partial withdrawal of the push-pin E may be utilized for throwingthe hands-setting train into position for use, and also en ables thewatch-movement to be easily removed from or placed within the case.

Having thus fully set forth the nature and merits of my invention, whatI claim as new is 1. As an improvement in stem-winding and hand-settingwatches, a push-pin which is adapted at its inner end to engage with thewinding and handssetting' train, and is pro vided with aretaining-spring that is attached directly to, is adjustable lengthwiseof, and moves with, said puslrpin, in combination with the chamberedstem or pendant of a watch-ease, substantially as and for the purposespecified.

2. ln combination with the chambered stem or pendant of a watch-case, aring of hard metal which is secured within said chamber and is adaptedto engage with the retaining spring of a removable pushpin substantiallyas and for the purpose shown.

3. The combination of the push-pin, the adjustable retaining-spring, thechambered stem or pendant, and the engagingring, substantially as andfor the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand this21st day of July, A. D. 1881-.

GEORGE HUNTER.

\Vitnesses:

XVILLLUI II. CLOUDMAN, H. L. GIVEN.

